Slow Xbench score

[cyberderf]

Here's my Xbench strange score. Any idea what might be causing all this ?

 

Results	76.99	
System Info		
	Xbench Version		1.3
	System Version		10.6.3 (10D578)
	Physical RAM		4096 MB
	Model		MacPro3,1
	Drive Type		WDC WD7501AALS-00E3A0
CPU Test	209.82	
	GCD Loop	351.85	18.55 Mops/sec
	Floating Point Basic	168.93	4.01 Gflop/sec
	vecLib FFT	138.10	4.56 Gflop/sec
	Floating Point Library	326.66	56.88 Mops/sec
Thread Test	238.96	
	Computation	522.45	10.58 Mops/sec, 4 threads
	Lock Contention	154.91	6.66 Mlocks/sec, 4 threads
Memory Test	207.44	
	System	229.63	
		Allocate	463.42	1.70 Malloc/sec
		Fill	176.60	8586.49 MB/sec
		Copy	190.70	3938.89 MB/sec
	Stream	189.16	
		Copy	172.93	3571.81 MB/sec
		Scale	175.47	3625.25 MB/sec
		Add	207.94	4429.63 MB/sec
		Triad	205.97	4406.17 MB/sec
Quartz Graphics Test	232.22	
	Line	192.60	12.82 Klines/sec [50% alpha]
	Rectangle	266.69	79.62 Krects/sec [50% alpha]
	Circle	229.50	18.71 Kcircles/sec [50% alpha]
	Bezier	238.82	6.02 Kbeziers/sec [50% alpha]
	Text	247.22	15.46 Kchars/sec
OpenGL Graphics Test	178.78	
	Spinning Squares	178.78	226.80 frames/sec
User Interface Test	17.24	
	Elements	17.24	79.12 refresh/sec
Disk Test	108.27	
	Sequential	189.56	
		Uncached Write	218.25	134.00 MB/sec [4K blocks]
		Uncached Write	187.87	106.30 MB/sec [256K blocks]
		Uncached Read	148.22	43.38 MB/sec [4K blocks]
		Uncached Read	224.74	112.95 MB/sec [256K blocks]
	Random	75.78	
		Uncached Write	24.31	2.57 MB/sec [4K blocks]
		Uncached Write	560.46	179.42 MB/sec [256K blocks]
		Uncached Read	165.45	1.17 MB/sec [4K blocks]
		Uncached Read	261.31	48.49 MB/sec [256K blocks]

 

 

 

 

My specs are in my signature.

 

By the way, I used to have 200 + in Xbench